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Subtract 30/28 from 1/15

1st number: 1/15, 2nd number: 1 2/28

1/15 - 30/28 is -211/210.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 28 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 15 × 28 = 420,
    1/15 = 1 × 28/15 × 28 = 28/420
  3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
    30/28 = 30 × 15/28 × 15 = 450/420
  4. Subtract the two like fractions:
    28/420 - 450/420 = 28 - 450/420 = -422/420
  5. After reducing the fraction, the answer is -211/210

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